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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.3L (On-Vehicle) >> Repair Instructions >> Cylinder Head Replacement - Right >> Removal Procedure

Removal Procedure

  1. Disconnect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE .
  2. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
  3. Remove the engine cooling fan assembly. Refer to FAN CLUTCH REPLACEMENT .
  4. Remove the generator mounting bracket.
  5. Remove the generator mounting bracket stud from the cylinder head.
    6. Fig 1: Generator Mounting Bracket Stud
    G01661155Courtesy of GENERAL MOTORS CORP.
  6. Remove the lower intake manifold. Refer to Intake Manifold Replacement - Lower .
  7. Remove the exhaust manifold. Refer to EXHAUST MANIFOLD REPLACEMENT - RIGHT .
  8. Remove the oil level indicator and tube. Refer to Oil Level Indicator and Tube Replacement .
  9. Remove the spark plug wire harness and spark plug wire support.
    Fig 2: Spark Plug Wire Harness & Wire Support
    G01661156Courtesy of GENERAL MOTORS CORP.
  10. Remove the bolt and the ground strap from the rear of the cylinder head.
    Fig 3: Ground Strap & Bolt At Rear Of Cylinder Head
    G01661157Courtesy of GENERAL MOTORS CORP.
  11. Remove the bolt and the ground wires from the rear of the cylinder head.
  12. Secure the ground strap and the ground wires out of the way.
  13. Remove the valve pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
    Fig 4: Ground Wires & Bolt At Rear Of Cylinder Head
    G01661158Courtesy of GENERAL MOTORS CORP.
  14. Remove the spark plugs.
    Fig 5: Spark Plug
    G01661159Courtesy of GENERAL MOTORS CORP.
  15. Remove the cylinder head bolts.
    Fig 6: Right Cylinder Head Bolts
    G01661160Courtesy of GENERAL MOTORS CORP.
    NOTE: After removal, place the cylinder head on two wood blocks to prevent damage.
  16. Remove the cylinder head.
    Fig 7: Right Cylinder Head
    G01661161Courtesy of GENERAL MOTORS CORP.
  17. Remove and discard the cylinder head gasket.
    Fig 8: Right Cylinder Head Gasket
    G01661162Courtesy of GENERAL MOTORS CORP.
  18. Remove the dowel pins (cylinder head locator) (if required).
    19. Fig 9: Right Cylinder Head Dowel Pins
    G01661163Courtesy of GENERAL MOTORS CORP.
  19. Clean the engine block and the cylinder head sealing surfaces.
    NOTE: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.
  20. Clean the cylinder head bolts and the engine block bolt holes.
  21. For further service to the cylinder head refer to the following:
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